2. SIGNAL TRANSDUCTION

3. Signal Transduction Pathway Protein Modification Phosphorylation Cascade Protein Kinases

4. Receptor transduction G-Protein Secondary Messenger Cell Target cAMP

5. G protein: Protein Phosphorylation R G GDP ACAC PK

6. G protein: Protein Phosphorylation R ACAC PK G GTP ATP cAMP

7. G protein: Protein Phosphorylation R ACAC PK G GTP ATP cAMP P

8. G protein: Protein Phosphorylation R ACAC PK G GTP ATP cAMP P Pore